Connection between Silicone and Polyolefin now Possible
With a research project, Raumedic AG, Helmbrechts, Germany, has now succeeded in connecting non-polar thermoplastics and silicones permanently. Thanks to a fundamental innovation, polyolefins as non-polar thermoplastics can be combined with a silicone elastomer, thus forming a novel adhesive bond.
This opens up the way for sealing elements or valves to be directly injection-molded onto the surrounding polyolefin. Thus, medical components or pharmaceutical dosing are simplified and their product safety is improved. It is also possible to produce co-extruded tubing, whose silicone outer layer provides outstanding pumping characteristics and excellent resilience. At the same time the PP inner layer with its distinct hydrophobia and low gas permeability shows almost no interaction with the flow-through medium.
Furthermore, it is quite conceivable in the future, according to the manufacturer, to overmold sealing elements or valves directly to the surrounding polyolefin component. This would not only simplify medical components or pharmaceutical dosing systems, but would also enhance product safety.
Depending on application and specification, Raumedic can provide variable layer distribution. Together with the customer the development partner and system supplier realizes individual products.
Patents encourage innovation: Stay on the ball with the latest innovations in the plastics industry in our patents section.
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